EP2709967B1 - Procédé de moulage d'éléments par injection de poudre - Google Patents
Procédé de moulage d'éléments par injection de poudre Download PDFInfo
- Publication number
- EP2709967B1 EP2709967B1 EP12786522.8A EP12786522A EP2709967B1 EP 2709967 B1 EP2709967 B1 EP 2709967B1 EP 12786522 A EP12786522 A EP 12786522A EP 2709967 B1 EP2709967 B1 EP 2709967B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- binder
- weight
- solvent
- shaped part
- volume
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 38
- 239000000843 powder Substances 0.000 title claims description 26
- 238000001746 injection moulding Methods 0.000 title claims description 13
- 239000011230 binding agent Substances 0.000 claims description 78
- 239000000203 mixture Substances 0.000 claims description 45
- 239000002904 solvent Substances 0.000 claims description 42
- -1 poly(tetramethylene) Polymers 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 229920000642 polymer Polymers 0.000 claims description 18
- CZLMRJZAHXYRIX-UHFFFAOYSA-N 1,3-dioxepane Chemical compound C1CCOCOC1 CZLMRJZAHXYRIX-UHFFFAOYSA-N 0.000 claims description 17
- 238000005245 sintering Methods 0.000 claims description 15
- 229920001169 thermoplastic Polymers 0.000 claims description 11
- 239000004416 thermosoftening plastic Substances 0.000 claims description 11
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 10
- 229920012196 Polyoxymethylene Copolymer Polymers 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 8
- 229920000570 polyether Polymers 0.000 claims description 8
- 125000001931 aliphatic group Chemical group 0.000 claims description 7
- 229920009382 Polyoxymethylene Homopolymer Polymers 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 6
- 238000011282 treatment Methods 0.000 claims description 6
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 claims description 5
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 229920000058 polyacrylate Polymers 0.000 claims description 4
- 239000004953 Aliphatic polyamide Substances 0.000 claims description 3
- 229920003231 aliphatic polyamide Polymers 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- VDFVNEFVBPFDSB-UHFFFAOYSA-N 1,3-dioxane Chemical compound C1COCOC1 VDFVNEFVBPFDSB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims 1
- 238000007669 thermal treatment Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 description 53
- 229920006324 polyoxymethylene Polymers 0.000 description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 13
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 12
- 229930040373 Paraformaldehyde Natural products 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 9
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 230000004580 weight loss Effects 0.000 description 6
- 229930182556 Polyacetal Natural products 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 229910001092 metal group alloy Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229940126214 compound 3 Drugs 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 230000011987 methylation Effects 0.000 description 3
- 238000007069 methylation reaction Methods 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000012255 powdered metal Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- BGJSXRVXTHVRSN-UHFFFAOYSA-N 1,3,5-trioxane Chemical compound C1OCOCO1 BGJSXRVXTHVRSN-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 description 1
- KIHBGTRZFAVZRV-UHFFFAOYSA-N 2-Hydroxyoctadecanoic acid Natural products CCCCCCCCCCCCCCCCC(O)C(O)=O KIHBGTRZFAVZRV-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 229920005682 EO-PO block copolymer Polymers 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229930188620 butyrolactone Natural products 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 229940125904 compound 1 Drugs 0.000 description 1
- 229940125782 compound 2 Drugs 0.000 description 1
- 229940125898 compound 5 Drugs 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000009757 thermoplastic moulding Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/227—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by organic binder assisted extrusion
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J159/00—Adhesives based on polyacetals; Adhesives based on derivatives of polyacetals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
Definitions
- the present invention relates to a process for the production of metallic moldings in the powder injection molding process.
- Metallic moldings can be produced by injection molding of thermoplastic compositions which, in addition to metal powders, comprise an organic binder. These are highly filled organic polymer molding compounds. After injection molding, extrusion or compression of the thermoplastic mass to a so-called green body, the organic binder is largely removed and a brown body is obtained, which is then sintered.
- the first binders were generally based on blends of polyethylene or polypropylene and wax. They were first liberated from the wax by melting and the residual binder was burned out in a slow pyrolysis step. For melting, the green parts must be stored in a powder bed, because the green strength is practically not given by the melting.
- a binder system for the complete thermal debindering of several components eg DE 199 25 197 A1 . These components are released successively during heating; the more volatile components create channels for the higher molecular weight components, which decompose later, at a higher temperature.
- WO 2012/123913 A2 describes a further process for the production of metallic or ceramic moldings from a thermoplastic composition comprising a POM-containing binder B1) and another binder B2).
- the green part is first treated with a solvent for the binder component B 2 ), and then the dried molded article is exposed to an acidic atmosphere to remove the binder component B1).
- WO 2011/016718 A1 describes a process for the production of metal or ceramic moldings, in which from a metallic or ceramic sintered powder with a binder mixture of a polymer such as polyoxymethylene (POM or polyacetal) and a non-polymeric solvent for the polymer (molecular weight ⁇ 300 g / mol , Melting point> RT) a molding compound is formed.
- the binder preferably contains at least 5% by weight each of the polymer and the non-polymeric solvent.
- the non-polymeric solvent is evaporated (eg at 69 to 130 ° C) or can be dissolved or diluted from the molding compound with another solvent.
- the remaining polymer is removed by thermal debindering, preferably above 200 ° C.
- a binder component generally polyoxymethylene
- a further remaining binder component of an acid-stable polymer is thermally removed.
- Catalytic debindering may be accomplished by treating the molding composition in a gaseous, acidic atmosphere at elevated temperature. For example, polyoxymethylene homopolymers or copolymers are depolymerized without residue.
- the remaining binder component whose residual binder content is only about 10% of the amount of binder initially present, is then thermally removed at 250-500 ° C within about 3 to 6 hours.
- EP2043802B1 describes a process for producing a thermoplastic composition
- a process for producing a thermoplastic composition comprising as essential components A) 40 to 70% by volume of a sinterable powdered metal or a sinterable powdered metal alloy or mixtures thereof, B) 30 to 60% by volume of a mixture of B1) From 50 to 96% by weight of one or more polyoxymethylene homopolymers or copolymers; B2) from 2 to 35% by weight of one or more polyolefins; B3) 2 to 40 wt .-% of poly-1,3-dioxepan or poly-1,3-dioxolane or mixtures thereof as a binder, wherein the sum of the weight fractions of the components B1, B2 and B3 gives 100%, and C) 0 to 5% by volume of a dispersing assistant, characterized in that a1) component B) is melted at temperatures of 150 to 220 ° C.
- component A) if appropriate together with component C), at temperatures in the same range as in step a) is metered to the melt stream of component B) or that one.
- component B) and C) melts in the presence of component A) at temperatures of 150 to 220 ° C.
- binder systems contain as further binder component in addition to POM a polymer system of polytetrahydrofuran and at least one polymer of C 2-8 olefins, vinyl aromatic monomers, vinyl esters of aliphatic C 1-8 carboxylic acids, vinyl C 1-8 alkyl ethers or C 1-12 Alkyl (meth) acrylates ( DE 100 19 447 A1 ) or a polymer system of C 2-8 olefins and poly-1,3-dioxepan or poly-1,3-dioxolane ( WO 2008/006776 A1 ).
- a complete thermal binder removal is also described with polyoxymethylene binders on the example of ceramic powders at temperatures of 160 to 220 ° C. in the presence of air or at 300 to 360 ° C. in the presence of nitrogen ( US 5,080,846 A and WO 91/07364 A1 ).
- the purely thermal binder removal is very slow and deformation of the moldings occurs very frequently, since the temperatures in the thermal debindering (> 200 ° C) of the metallic molding compounds in a temperature range far above the melting range of polyacetal (160 to 170 ° C).
- thermal debinding in an oxygen-containing atmosphere is a problem with the use of metal powders, as opposed to ceramic powders, because the powder surface is generally oxidized in the process, thereby compromising the quality and integrity of the sintered article.
- the object of the invention is therefore to provide an improved process for the production of metallic moldings, which does not have the aforementioned disadvantages.
- the polyoxymethylene homopolymers or copolymers are known as such and are commercially available.
- the homopolymers are usually prepared by polymerization of formaldehyde or trioxane, preferably in the presence of suitable catalysts.
- Polyoxymethylene copolymers which are preferred in the context of the invention likewise contain trioxane and other cyclic or linear formals or other formaldehyde sources as main monomers.
- the term main monomers is intended to express that the proportion of these monomers in the total amount of monomers, ie the sum of main and comonomers, is greater than the proportion of comonomers in the total amount of monomers.
- POM polymers have at least 50 mole percent of recurring units -CH 2 O- in the polymer backbone.
- Suitable polyoxymethylene copolymers are used in EP-A 0 446 708 (Page 3, lines 39 to page 4, line 31).
- the proportion of component B 1 ) is preferably 65 to 85 wt .-%, based on the total amount of the binder B).
- the proportion of component B 2 ) is preferably 15 to 35% by weight, based on the total amount of binder B).
- component B 2 polymers selected from aliphatic polyurethanes, aliphatic uncrosslinked polyepoxides, polyethers, aliphatic polyamides, polyacrylates and mixtures thereof are used.
- the aforementioned polymers B 2 ) are also in the EP-A 0 446 708 (Page 4, line 34 to page 7, line 12).
- polyethers in particular poly (C 2 -C 6 ) -alkylene oxides, such as polyethylene oxide (PEO), polypropylene oxide, poly-1,3-dioxepane (PDX), poly-1,3- dioxane, poly-1,3-dioxolane, polytetrahydrofuran (PTHF) and / or mixtures thereof, preferably having weight average molecular weights in the range of 600 to 100,000 g / mol, particularly preferably 2,000 to 50,000.
- PEO polyethylene oxide
- PDX poly-1,3-dioxepane
- PTHF polytetrahydrofuran
- Corresponding products are commercially available available, or the corresponding preparation processes are similar to those described for polyoxymethylene copolymers and are known in the art, so that here is no further details. It is also possible to use mixtures of different polyethers and / or polyethers of different molecular weights.
- the sinterable metal powder A is to be understood as meaning metal powder, metal alloy powder, metal carbonyl powder and / or mixtures thereof.
- metals which may be present in powder form are aluminum, iron, in particular carbonyl iron powder, chromium, cobalt, copper, nickel, silicon and titanium.
- powdered metal alloys for example, high or low alloyed steels and metal alloys based on aluminum, iron, titanium, copper, nickel, tungsten or cobalt are mentioned. Both powder of finished alloys and powder mixtures of the individual alloy components can be used.
- the particle sizes of the powders are preferably 0.1 to 50 ⁇ m, more preferably 0.3 to 30 ⁇ m.
- the optionally present as component C) dispersing agent may be selected from known dispersing aids. Examples are oligomeric polyethylene oxide having an average molecular weight of 200 to 600, stearic acid, stearic acid amide, hydroxystearic acid, fatty alcohols, fatty alcohol sulfonates and block copolymers of ethylene oxide and propylene oxide, and also polyisobutylene.
- thermoplastic compositions may also contain conventional additives and processing aids which favorably influence the rheological properties of the mixtures during shaping.
- the preparation of the thermoplastic material used in the process according to the invention can be carried out in a conventional manner in a kneader or extruder at temperatures of 150 to 200 ° C (see. EP-A-0 413 231 ). After cooling the mass, it can be granulated.
- the preparation of the thermoplastic mass to be formed by melting the components B) and mixing the components A) and optionally C) take place.
- component B) can be melted in a twin-screw extruder at temperatures of preferably 150 to 220 ° C., in particular 170 to 200 ° C.
- Component A) is then metered at temperatures in the same range in the required amount to the melt stream of component B).
- component A) contains on the surface the dispersant (s) C).
- the preparation of the thermoplastic compositions can also be carried out by melting the components B) and C) in the presence of component A) at temperatures of 150 to 220 ° C.
- thermoplastic molding composition by injection molding
- the usual screw and piston injection molding machines can be used.
- the molding is generally carried out at temperatures of 175 to 200 ° C and pressures of 3,000 to 20,000 kPa in molds having a temperature of 60 to 140 ° C.
- the demolded green compacts are then treated by the process according to the invention according to step a) with a solvent.
- a solvent The choice of solvent depends on the chemical nature of the binder component B 2 ). Solvents for some binder components B 2 ) are given below by way of example only; the solvents for other binder components B 2 ) should be known to the person skilled in the art. Mixtures of suitable solvents can also be used.
- Polyacrylates (eg PMMA) and polyamides are generally soluble in the following solvents: ethers such as diethyl ether or tetrahydrofuran, ketones such as methyl ethyl ketone or acetone, esters such as butyrolactone and C 1 -C 4 alcohols such as ethanol.
- Polyethers such as polytetrahydrofuran, poly-1,3-dioxepane, poly-1,3-dioxolane, polyethylene oxide or polypropylene can for instance be dissolved in solvents such as tetrahydrofuran or acetone and in the C 1 -C 6 - alcohols, such as ethanol and isopropanol; Polyethylene oxide can also be dissolved in water.
- step a) takes place at elevated temperature, ie a temperature above room temperature to the boiling point of the solvent, in particular at a temperature of 40 to 120 ° C.
- step a) takes place at the boiling point of the solvent under reflux.
- polyoxymethylene homopolymers and copolymers (POM) used as binder component B 1 ) or residual binder for step a) of the process according to the invention are resistant to virtually all customary solvents up to 120 ° C. and still guarantee a very high temperature of up to 120 ° C. Strength.
- step a) of the process according to the invention during extraction there is a large concentration difference between the soluble binder component B 2 ) in the molding and the solvent.
- the latter can be achieved by replacing the loaded solvent often with fresh solvent and / or the dissolved extract is quickly carried away, for example by a circulation of the surface of the extraction material.
- the treatment with a solvent according to step a) of the process according to the invention is preferably carried out until the binder component B 2 ) is at least 75% by weight, preferably 85% by weight, particularly preferably 90% by weight the molding is removed. This condition is generally reached after 4 to 48 hours.
- the required duration of treatment depends on the treatment temperature on the quality of the solvent for the binder component B 2), the molecular weight of the component B 2), as also on the size of the molding.
- the green parts which are now porous and saturated with solvent, still have to be dried.
- the drying of the molding is preferably carried out in a conventional manner, for example by means of a vacuum drying oven, a heat cabinet or a convection oven, according to step b) of the method according to the invention.
- the drying can also be advantageously integrated in step c) of the process according to the invention.
- both the drying and the thermal Restentbindern in the same system for example, in a circulation furnace, are carried out, whereby a reloading of the moldings between drying and thermal debinding is not required.
- the solvent is removed in a separate step b).
- the drying temperature is based on the boiling point of the solvent, but is preferably chosen slightly lower in order to avoid the risk of a sudden or too fast drying process with possible negative consequences for the quality of the green part.
- the drying according to step b) of the process according to the invention is completed in 0.5 to 8 h.
- the thermal debindering c) takes place in furnaces in which the green compacts are exposed in an oxygen-containing atmosphere for a defined period of a suitable temperature in the range of 140 to 200 ° C.
- the design and materials of the furnace must ensure that the temperature in the furnace volume is the same everywhere, and good heat transfer to the moldings to be debinded is achieved. In particular, cold spots in the interior of the furnace system are to be avoided in order to prevent the condensation of decomposition products.
- An oxygen-containing atmosphere is to be understood as meaning a gas mixture of an inert gas such as nitrogen or argon with 1 to 100% by volume of oxygen, with air being preferred.
- internals or circulating elements are known from the prior art, which ensure uniform distribution and turbulence of the furnace atmosphere, so that all shaped bodies are subjected to the same temperature conditions as possible.
- a preferred oven is a conventional convection oven for heat treatments.
- sufficient fresh gas supply is necessary (at least a tenfold replacement) to sufficiently dilute the decomposition product formaldehyde ( ⁇ 4% by volume) and thus keep the oven in a safe operating condition, such as air / Formaldehyde mixtures are flammable.
- step c) of the process according to the invention is carried out until the binder component B 1 ) at least 20 wt .-%, preferably at 50 wt .-%, particularly preferably at 85 wt .-%, removed from the molding is.
- the metal moldings obtained by the process according to the invention are only superficially oxidized by the low temperatures used in the thermal debinding in comparison with the prior art and have improved quality and integrity than metal moldings which have been produced according to the prior art.
- test compounds were mixed in a cone mixer and homogenized and granulated in a laboratory extruder heated to 190 ° C.
- the length of the component was 100 mm, the weight of the obtained sintered part was about 34 g for the metal powder examples 1 to 5.
- test masses were melted in the cylinder of the injection molding machine at 190 ° C, the injection mold was heated to 135 ° C.
- required injection pressure was about 1900 bar, only test compound 3 with a high PEO content and the lower molecular weight 2000 could be processed at 1100 bar.
- test masses differed in the cooling time required before demoulding.
- the test masses with a higher proportion of secondary binders (30% and higher) were somewhat softer and required a longer cooling time in order to be able to remove the green part intact; the green parts also showed some streaks on the surface.
- the test compound 3 with 50% PEO content had to be more carefully demolded and handled because of the reduced green part resistance and is therefore seen as the upper limit for binder component B 2 ).
- the green parts produced from the test masses were pretreated in a solvent, after which the molded part was thermally removed and sintered sintered.
- Table 1 shows the results in terms of weight loss as percent of theory in the solvent primary debindering with acetone: Table 1 Weight loss of the molding (% of Th.) example metal powder Composition of binder (% by weight) 7 h of acetone 14 h acetone 21 h acetone 28 hours of acetone 1 Fe / Ni POM-10% PEO 2000 59 77 84 89 2 Fe / Ni POM - 20% PEO 2000 70 85 92 95 3 Fe / Ni POM - 50% PEO 2000 71 85 94 97 4 Fe / Ni POM -10% PTHF 2000 69 81 85 88 5 17-4PH POM -20% PDX 34000 90
- Example 3 with the highest PEO content is no longer significantly faster with respect to the solution process. Even at 10% by weight of component B 2 ) (Example 1) the removal is still surprisingly rapid.
- step T 1 T 2 heating rate Residence time at T 2 [° C] [° C] [° C / h] [H] 0 RT 130 300 1 1 130 140 10 6 2 140 150 10 16 3 150 160 10 1 4 160 170 10 1 5 170 170 - 5 6 170 170 - 39
- the moldings obtained according to the inventive method according to Examples 1 to 4 were sintered after heating stage 5 in the 30-L sintering furnace with molybdenum cladding and molybdenum sintered elements under quality 4.8 hydrogen from the dot notation.
- the strength after complete debindering was sufficient for reloading; could also be handled with the moldings.
- the sintered parts were bright, defect-free and reached a practically identical final density of 7.66 g / cm 3 .
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Powder Metallurgy (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Claims (6)
- Procédé de fabrication d'un corps moulé métallique à partir d'une masse thermoplastique par moulage par injection ou extrusion en une pièce moulée, élimination du liant et frittage, caractérisé en ce qu'une masse thermoplastique contenant :A) 40 à 65 % en volume d'au moins une poudre métallique frittable A,B) 35 à 60 % en volume d'un mélange de :B1) 50 à 95 % en poids d'un ou de plusieurs homo- ou copolymères de polyoxyméthylène ;B2) 5 à 50 % en poids d'un polymère dissous de manière homogène dans B1) ou dispersé avec une taille de particule moyenne de moins de 1 µm dans B1), choisi parmi les polyuréthanes aliphatiques, les polyépoxydes aliphatiques non réticulés, les polyéthers, les polyamides aliphatiques, les polyacrylates et leurs mélanges, en tant que liant, etC) 0 à 5 % en volume d'un adjuvant de dispersion, est utilisée,la somme des composants A), B) et C) ne dépassant pas 100 % en volume ; et, pour l'élimination du liant,a) la pièce moulée est traitée avec un solvant, qui extrait le composant liant B2) et éventuellement le composant C de la pièce moulée, et dans lequel le composant liant B1) est insoluble,b) puis le solvant est éliminé de la pièce moulée par séchage, etc) la pièce moulée est traitée thermiquement à 140 à 200 °C, de préférence 140 à 170 °C dans une atmosphère contenant de l'oxygène, le composant liant B1) étant éliminé de la pièce moulée à hauteur d'au moins 20 % en poids, de préférence d'au moins 50 % en poids, de manière tout particulièrement préférée d'au moins 85 % en poids,aucun traitement de la pièce moulée dans une atmosphère contenant un acide n'ayant lieu après l'étape b).
- Procédé selon la revendication 1, caractérisé en ce que la proportion de composant liant B2) est de 15 à 35 % en poids.
- Procédé selon la revendication 1 ou 2, caractérisé en ce que le composant liant B2) est un polyéther choisi dans le groupe contenant le polyoxyde d'éthylène, le polyoxyde de propylène, le poly-1,3-dioxépane, le poly-1,3-dioxane, le poly-1,3-dioxolane, le polytétrahydrofurane (polyoxyde de tétraméthylène) et leurs mélanges.
- Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'étape a) est réalisée à une température allant d'une température supérieure à la température jusqu'à la température d'ébullition du solvant.
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'à l'étape a), le traitement avec un solvant est réalisé jusqu'à ce que le composant liant B2) soit éliminé de la pièce moulée à hauteur d'au moins 75 % en poids, de préférence 85 % en poids.
- Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'à l'étape c), le traitement thermique a lieu dans un four à circulation.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL12786522T PL2709967T3 (pl) | 2011-05-18 | 2012-05-15 | Sposób wytwarzania elementów konstrukcyjnych w procesie formowania wtryskowego proszku |
EP12786522.8A EP2709967B1 (fr) | 2011-05-18 | 2012-05-15 | Procédé de moulage d'éléments par injection de poudre |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11166493 | 2011-05-18 | ||
EP12786522.8A EP2709967B1 (fr) | 2011-05-18 | 2012-05-15 | Procédé de moulage d'éléments par injection de poudre |
PCT/IB2012/052418 WO2012156905A1 (fr) | 2011-05-18 | 2012-05-15 | Procédé de moulage d'éléments par injection de poudre |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2709967A1 EP2709967A1 (fr) | 2014-03-26 |
EP2709967A4 EP2709967A4 (fr) | 2015-10-14 |
EP2709967B1 true EP2709967B1 (fr) | 2019-05-08 |
Family
ID=47176367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12786522.8A Active EP2709967B1 (fr) | 2011-05-18 | 2012-05-15 | Procédé de moulage d'éléments par injection de poudre |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP2709967B1 (fr) |
JP (1) | JP6060151B2 (fr) |
KR (1) | KR101916495B1 (fr) |
CN (1) | CN103608314B (fr) |
DK (1) | DK2709967T3 (fr) |
ES (1) | ES2740984T3 (fr) |
HU (1) | HUE044441T2 (fr) |
PL (1) | PL2709967T3 (fr) |
TR (1) | TR201910582T4 (fr) |
WO (1) | WO2012156905A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2915398T3 (es) * | 2014-05-21 | 2022-06-22 | Basf Se | Procedimiento para mejorar la tenacidad a la flexión de piezas moldeadas |
EP3321002A1 (fr) * | 2016-11-15 | 2018-05-16 | Höganäs AB | Charge d'alimentation d'un procédé de fabrication additive, procédé de fabrication additive l'utilisant, et article ainsi obtenu |
US20210229174A1 (en) * | 2018-05-15 | 2021-07-29 | Höganäs Ab | Binder composition for metal injection molding feedstocks; metal injection molding feedstock comprising the same; metal injection molding process using the feedstock, and article obtained by the process |
WO2020190276A1 (fr) * | 2019-03-18 | 2020-09-24 | Hewlett-Packard Development Company, L.P. | Formation d'objet métallique tridimensionnel |
CN112080786A (zh) * | 2020-09-08 | 2020-12-15 | 东莞领杰金属精密制造科技有限公司 | 一种金属表层异色深度还原液及还原方法 |
CN113560576A (zh) * | 2021-06-18 | 2021-10-29 | 深圳艾利门特科技有限公司 | 超高强高韧钢零件的mim成型工艺 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4197118A (en) | 1972-06-14 | 1980-04-08 | Parmatech Corporation | Manufacture of parts from particulate material |
US5194203A (en) | 1991-02-28 | 1993-03-16 | Mitsui Mining & Smelting Co., Ltd. | Methods of removing binder from powder moldings |
CN1106324A (zh) * | 1994-02-07 | 1995-08-09 | 北京粉末冶金研究所 | 金属腔形制件的注塑成型方法 |
DE4408304A1 (de) * | 1994-03-11 | 1995-09-14 | Basf Ag | Sinterteile aus sauerstoffempfindlichen, nicht reduzierbaren Pulvern und ihre Herstellung über Spritzgießen |
JPH08283801A (ja) * | 1995-04-10 | 1996-10-29 | Kobe Steel Ltd | 金属粉末射出成形体における有機溶媒可溶性バインダーの除去方法および金属粉末射出成形体の製造方法 |
JP3822293B2 (ja) * | 1996-11-01 | 2006-09-13 | ポリプラスチックス株式会社 | 抽出脱脂工程を含む燒結成形体製造用組成物及びそれを用いる焼結成形体の製造方法 |
JP2955754B1 (ja) | 1998-06-01 | 1999-10-04 | 有限会社モールドリサーチ | 金属粉末の射出成形用組成物と、その組成物を用いた射出成形及び焼結法 |
US7326274B2 (en) * | 2001-10-18 | 2008-02-05 | Praxis Powder Technology, Inc. | Binder compositions and methods for binder assisted forming |
BRPI0714047B1 (pt) * | 2006-07-13 | 2018-01-02 | Basf Se | Aglutinante, composição termoplástica, uso da composição termoplástica, corpo moldado metálico, e, processos para a produção de uma composição termoplástica, para a produção de corpos moldados a partir de uma composição termoplástica |
JP2010500469A (ja) * | 2006-08-07 | 2010-01-07 | ザ ユニバーシティー オブ クイーンズランド | 金属射出成形方法 |
CN101235265A (zh) * | 2008-01-28 | 2008-08-06 | 王明喜 | 一种粘结剂及其所制成的金属粉末注射成型用喂料 |
NL2003325C2 (en) * | 2009-08-03 | 2011-02-04 | Syroko B V | Method for producing a powder injection moulded part. |
CN103517886B (zh) | 2011-03-16 | 2015-09-09 | 巴斯夫欧洲公司 | 制备金属或陶瓷模制体的方法 |
-
2012
- 2012-05-15 EP EP12786522.8A patent/EP2709967B1/fr active Active
- 2012-05-15 KR KR1020137033479A patent/KR101916495B1/ko active IP Right Grant
- 2012-05-15 TR TR2019/10582T patent/TR201910582T4/tr unknown
- 2012-05-15 CN CN201280029791.XA patent/CN103608314B/zh active Active
- 2012-05-15 WO PCT/IB2012/052418 patent/WO2012156905A1/fr active Application Filing
- 2012-05-15 DK DK12786522.8T patent/DK2709967T3/da active
- 2012-05-15 ES ES12786522T patent/ES2740984T3/es active Active
- 2012-05-15 PL PL12786522T patent/PL2709967T3/pl unknown
- 2012-05-15 JP JP2014510925A patent/JP6060151B2/ja active Active
- 2012-05-15 HU HUE12786522 patent/HUE044441T2/hu unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
JP6060151B2 (ja) | 2017-01-11 |
CN103608314B (zh) | 2015-11-25 |
DK2709967T3 (da) | 2019-07-29 |
JP2014519550A (ja) | 2014-08-14 |
CN103608314A (zh) | 2014-02-26 |
KR101916495B1 (ko) | 2018-11-07 |
TR201910582T4 (tr) | 2019-08-21 |
ES2740984T3 (es) | 2020-02-07 |
WO2012156905A1 (fr) | 2012-11-22 |
EP2709967A1 (fr) | 2014-03-26 |
KR20140045946A (ko) | 2014-04-17 |
EP2709967A4 (fr) | 2015-10-14 |
HUE044441T2 (hu) | 2019-10-28 |
PL2709967T3 (pl) | 2019-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2709967B1 (fr) | Procédé de moulage d'éléments par injection de poudre | |
EP2043802B1 (fr) | Masses thermoplastiques contenant des liants pour la fabrication de corps de moule métalliques | |
EP0465940B1 (fr) | Masses thermoplastiques pour la fabrication d'articles moulés métalliques | |
EP0446708B1 (fr) | Matières thermoplastiques pour la préparation d'articles métalliques | |
AT509613B1 (de) | Verfahren zur herstellung von formköpern aus aluminiumlegierungen | |
DE68916778T2 (de) | Verfahren zum Entbinden von Spritzgegossenen Gegenständen. | |
DE19925197A1 (de) | Spritzgußfähige Metallpulverzusammensetzung und Spritzguß- und Sinterverfahren unter Verwendung einer derartigen Zusammensetzung | |
EP2686286A2 (fr) | Procédé de fabrication de corps moulés métalliques ou céramiques | |
WO2001081467A1 (fr) | Liant pour materiau pulverulent inorganique destine a la production de pieces moulees metalliques et ceramiques | |
WO2000006327A2 (fr) | Procede de production de composants par un procede de moulage par injection de poudre metallique | |
EP1558417A1 (fr) | Masse de moulage par injection de poudre metallique et procede de moulage par injection de poudre metallique | |
EP2416910A1 (fr) | Procédé de fabrication d'une roue de turbine pour un turbocompresseur à gaz d'échappement | |
US9403212B2 (en) | Process for producing components by powder injection molding | |
WO1994025205A1 (fr) | Procede de fabrication de pieces frittees | |
EP1717539A1 (fr) | Méthode de fabrication d'une culasse d'arme à feu | |
DE19614006A1 (de) | Verfahren zur Herstellung von Granulat und Formteilen aus Hartmetall- oder Cermet-Materialien | |
EP2321076B1 (fr) | Liant pour la production de pièces moulées frittées | |
EP2183067B1 (fr) | Matière à mouler et procédé de fabrication d'une matière à mouler | |
CH632225A5 (en) | Process for making a fired moulding from particulate material | |
DE112016001286T5 (de) | Maschinenkomponente und herstellungsverfahren dafür | |
EP0710516A2 (fr) | Procédé et composé de moulage par injection pour la manufacture d'objets moulés | |
EP2753443B1 (fr) | Liants et procédés de fabrication de corps moulés métalliques ou céramiques par moulage par injection de poudres | |
EP0517025B1 (fr) | Procédé pour le traitement thermoplastique de polymères non-thermoformables | |
WO2022106166A1 (fr) | Procédé de production de corps façonnés par frittage | |
WO2008077776A2 (fr) | Procédé de déliantage thermique d'un corps moulé métallique et/ou céramique fabriqué par moulage par injection, extrusion ou injection sous pression d'une matière thermoplastique |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20131218 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAX | Request for extension of the european patent (deleted) | ||
RA4 | Supplementary search report drawn up and despatched (corrected) |
Effective date: 20150911 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: C04B 35/634 20060101AFI20150907BHEP Ipc: B22F 3/10 20060101ALI20150907BHEP Ipc: C08L 59/00 20060101ALI20150907BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20170717 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20181024 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: AT Ref legal event code: REF Ref document number: 1129904 Country of ref document: AT Kind code of ref document: T Effective date: 20190515 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502012014765 Country of ref document: DE Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 Effective date: 20190726 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20190508 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: HU Ref legal event code: AG4A Ref document number: E044441 Country of ref document: HU |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190808 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190908 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 |
|
REG | Reference to a national code |
Ref country code: SK Ref legal event code: T3 Ref document number: E 31881 Country of ref document: SK |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190808 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190809 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20190531 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2740984 Country of ref document: ES Kind code of ref document: T3 Effective date: 20200207 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502012014765 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190515 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20200211 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20190808 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190531 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1129904 Country of ref document: AT Kind code of ref document: T Effective date: 20190515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190808 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190908 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190508 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20230523 Year of fee payment: 12 Ref country code: ES Payment date: 20230612 Year of fee payment: 12 Ref country code: DK Payment date: 20230524 Year of fee payment: 12 Ref country code: DE Payment date: 20230530 Year of fee payment: 12 Ref country code: CZ Payment date: 20230511 Year of fee payment: 12 Ref country code: CH Payment date: 20230602 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20230426 Year of fee payment: 12 Ref country code: SK Payment date: 20230426 Year of fee payment: 12 Ref country code: PL Payment date: 20230420 Year of fee payment: 12 Ref country code: HU Payment date: 20230428 Year of fee payment: 12 |